16 Literature and written materials, namely, newsletters, informational and educational written pamphlets, brochures, handbooks, catalogs in the field of products for patients with celiac sprue disease and gluten-induced sensitivities, including, but not limited to, dermatitis herpetiformis; cookbooks, booklets, leaflets, informational flyers, wallet-sized informational cards, posters, informational sheets, research monographs, journals and journal reprints, charts, diagrams, and adhesive-backed stickers, all relating to celiac sprue disease and gluten-induced sensitivities, including, but not limited to, dermatitis herpetiformis; kits comprising of one or more of the foregoing materials; and books, periodicals and other informational documents, all relating to celiac sprue disease and gluten-induced sensitivities, including, but not limited to, dermatitis herpetiformis